{
  "id": 9345056,
  "title": "Could negative mass exist and be observed?",
  "url": "https://urgent.news/2026/09/23/could-negative-mass-exist-and-be-observed",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-23T13:20:12.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-09-negative-mass.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "Unlike electric charge, as far as we know all mass is positive, and positive masses attract one another. Could negative mass exist, and if so, what would be the ramifications?",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}